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Topic: Solis Maestro (23 msgs / 444 lines)
1) From: John Wanninger
I suppose this is a question mostly for Tom, but maybe others may know too,
and I think many may be interested in the answer:
I bought the Solis Maestro, and it works wonderfully! However, the
instructions state NEVER OPERATE THE GRINDER WITHOUT BEANS; ok, fair enough.
Is it ok to run the grinder till its all out of beans? I sure hope so, as
for me it's the most convenient way; I'll often grind different several
different bean origins at different grind settings in a single day.  While
I've been doing this with my old Kitchenaid A-9 for the past 18 years, maybe
this is a bad practice.  Will doing so harm the burrs on the Maestro? My
guess is that harm might be most likely or most severe ( due to the burrs
potentially touching) when using the finest grind settings. And is this a
bad practice for grinders in general?
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2) From: EuropaChris
It should not hurt the grinder at all.  I always run my 166 until it's out of beans, even on the finest settings for espresso.  Havnen't noticed any ill effects.  If the burrs require beans to keep from touching, I'd be highly suspect of the design of the mechanism.
"John Wanninger"  wrote:
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3) From: Jeff Morris
I've always let my 166 run for a few seconds at the end.  Its a lot better
than throwing out a pot of coffee because you neglected to grind 20% of a
carefully weighed load of beans.  (You can make coffee weaker, but its hard
to make it stronger!)
I'm sure the warning has to do with overheating from extending no-load
running.  BTW, the current load drops in half when it runs no-load (from
about 1.6 Amps to 0.8) but all of that energy goes into heat.

4) From: Seth Goodman
At 09:26 AM 10/30/01 -0600, John Wanninger wrote:
I always run my Solis 166 until it runs out of beans - no problem.  In 
general, it is a bad idea to let *any* motor run with no load for very long 
- it permits the motor to over-rev, and perhaps overheat.   The time it 
takes for you to switch off the grinder after you've run out of beans 
should certainly be acceptable.
I think it has nothing to do with the burrs, BTW.
But don't take my word for it - call Baratza direct (their 800# should be 
in your instruction manual), and ask - I've found them to be very nice 
people to talk to.
Seth Goodman
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5) From: gerald allen green
I concur with all those who say overheating would be the only problem.  On both
my Solis 166 and my Gaggia Paros grinders, I "grind" after the aslt bean has long
gone through, and no problem in several years of use. - Jerry
Seth Goodman wrote:
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6) From: Steven D

7) From: Steve Shank
Besides running after it is empty, I start before I put the beans in. I am
under the impression that less damage is done to the burrs and motor if you
start it empty and then add beans, so it doesn't have to start up with
perhaps a bean in the burr.
*********** REPLY SEPARATOR  ***********
On 10/30/2001 at 11:21 AM Seth Goodman wrote:
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8) From: Henry C. Davis
bearings not able to handle free spin for long (who knows how long they are
really talking about anyway) periods of time maybe? Or maybe the concern is
for the burr assembly possibly wobbling when not under load so much as to do
damage? I agree it is unlikely that the caution message is from concern for
the windings or the actual motor parts, at least for intermittent free spin
for a few minutes duration.
I have noticed that several grinders give cautions that say not to do batch
after batch after batch. Two or three then rest it. This, too, would seem to
be more concern for bearings not the motor itself.

9) From: Paul Goelz
Actually, I think that it IS the motor that is the concern.  I doubt that
the motor is designed for continuous operation, and would likely overheat
if allowed to run continuously.  Since the grinder has a timer and cannot
run continuously by itself, the only concern would be if someone ground
batch after batch without a suitable cooldown in between.  
Some motors dissipate more power under load and some dissipate more power
unloaded.  Depends on the design and of course on whether or not there is
any cooling provided.  
Paul Goelz
Rochester Hills, MI
pgoelz at eaglequest dot com
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10) From: Henry C. Davis
I would agree that this sort of thing would be a problem for the motor if
you ran it continuously - either under load or not - because it isn't
designed to be a continuous duty rated or long duration rated motor.
However, the question was raised because the instructions in this instance
apparently say NEVER run it without a load.... possibly they are overstating
it so they don't have to explain to the mechanically challenged what "too
much" is in terms of continuous duty?

11) From: Jeff Morris
Just two more cents on this - the 166 has no venting for the motor so the
plastic casing has to absorb heat equal to a 100 watt bulb under no load,
probably more under load.  If nothing else, this makes it impossible to run
continuous for any extended period.  I'd guess the Maestro is the same.
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12) From: Dave Peckham
I musta played hooky that day and missed that particular physics lesson....

13) From: Mark
At 07:50 AM 30/10/2001, you wrote:
Just fyi, and straight from the engineer who designed the grinder (Kyle 
Anderson) the RPMS under no load are approx 550, and under full load they 
are 500RPMs (by comparison, the Mulino was 1300 no load, 650 full load). 
That's the gear reduction system at work. It may be because of this gear 
system that rather dire warning is in the manual. I'll ask Kyle next time I 
speak to him.
Mark Prince
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14) From: Mark
At 04:50 AM 01/11/2001, you wrote:
As I mentioned in a post a few mins ago, it's probably the gear reduction 
system that they are concerned about, not the motor, but I'll confirm in a 
few days.
Mark Prince
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15) From: Terry & Dona McVay
Folks, I had a question a while ago about the grind in my Solis varying 
from dust to chunks at all settings, and received some very good 
advice.  Could I share a workaround/fix that cleared it up for me ?  I took 
out the grinding ring burr, the one on top, just under the bean hopper, 
instructions are on Baratza's website under 'cleaning instructions'.  That 
upper burr rides in a white plastic carrier, and it was moving rotationally 
inside that carrier just a bit... not much.  There are two, opposed flat 
surfaces on the metal burr that are supposed to sit against corresponding 
flat sides of the carrier, and so I cut appropriate sized pieces from a 
business card and set one each in between the carrier and the burr to hold 
it steady, as well as make sure it was centered in the carrier, put it all 
back together and good as new !
Hope to see some of you at the Kona Coffee Festival, I put in for vacation, 
but doesn't look good at this point.
Terry McVay
Captain Cook, Hawaii
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16) From: EuropaChris
Interesting fix.  I'll dig out my 166 here and try it.  It's in pretty bad shape, so we'll see if there's an improvement.
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17) From: EuropaChris
Just 'fixed' my aged, well worn 166 grinder with this trick.  It definitely helps!  It doesn't turn it into a Rocky, but for drip work, it is much more even in grind.  Still not perfect, however, but I didn't expect it to work miracles.  I also did the mod to my Bodum Antigua grinder, which while much less used than the 166, still suffers from the grind variation.  I notice the hopper jumps around a lot less with the mod and the grinder seems quieter.
Nice work!
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18) From: Gordon/Mary
At 4:38 PM -1000 10/22/2002, Terry & Dona McVay wrote:
Thanks for posting this info. Could you please give the URL for the 
"cleaning instructions?" I don't see this on Baratza's website.
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19) From: Darren Conrad
The instructions for cleaning the top burr assembly are contained in the owners
manual located athttp://www.baratza.com/media/Maestro_manual.pdfThanks for the tip about the business card trick, Terry - I'll have to give
that a try and see if it improves the grind on my unit!
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20) From: Tom & Maria
Hi Gordon,
I have it on our solis page too, it is on the PDF file for the Maestro.http://sweetmarias.com/prod.solis-espresso.shtmlTom
                   "Great coffee comes from tiny roasters"
            Sweet Maria's Home Coffee Roasting  -  Tom & Maria
		1455 64th Street Emeryville CA 94608
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21) From: Angelo
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22) From: Gordon/Mary
At 1:51 PM -0700 10/23/2002, Darren Conrad wrote:
Thanks, Darren, for the above link. From the initial reference, I 
thought perhaps this would have more information than what is 
contained in the original operating instructions.
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23) From: Gordon/Mary
At 3:12 PM -0700 10/23/2002, Tom & Maria wrote:
Thank you, Tom, for above link. It's good to know the PDF file is 
there for future reference in the very likely event that I misplace 
my original copy of the Maestro instructions. ;-)
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